1535248561 has 32 divisors (see below), whose sum is σ = 1963450368. Its totient is φ = 1165669440.

The previous prime is 1535248543. The next prime is 1535248571. The reversal of 1535248561 is 1658425351.

It is a cyclic number.

It is not a de Polignac number, because 1535248561 - 2¹⁵ = 1535215793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1535248501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 950991 + ... + 952603.

It is an arithmetic number, because the mean of its divisors is an integer number (61357824).

Almost surely, 2^1535248561 is an apocalyptic number.

1535248561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1535248561 is a deficient number, since it is larger than the sum of its proper divisors (428201807).

1535248561 is a wasteful number, since it uses less digits than its factorization.

1535248561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941.

The product of its digits is 144000, while the sum is 40.

The square root of 1535248561 is about 39182.2480340268. The cubic root of 1535248561 is about 1153.6114723301.

The spelling of 1535248561 in words is "one billion, five hundred thirty-five million, two hundred forty-eight thousand, five hundred sixty-one".